<html>
  <body>
    <script src="https://cdn.jsdelivr.net/npm/mermaid/dist/mermaid.min.js"></script>
      <div class="mermaid">

        classDiagram
          class data {
          }
          class clientmodule_test {
          }
          class nullable_pattern {
          }
          class property_pattern {
          }
          class suppliermodule_test {
          }
          clientmodule_test --> suppliermodule_test
  
       </div>
  </body>
</html>
